Trad Gang

Main Boards => PowWow => Topic started by: kenner on April 28, 2011, 08:54:00 PM

Title: Does urethane add spine/stiffness to arrow shafts?
Post by: kenner on April 28, 2011, 08:54:00 PM
Hello,
I'm using spruce and fir arrow shafts and sealing them with Helmsman spar urethane. Will finishing arrows cause them to gain spine? And will more coats add more stiffness?

I have a very precise spine tester I made with a dial depth gauge, so I can run a test, but was just wondering if any of you had experience in this area?

Thanks!.... Ken
Title: Re: Does urethane add spine/stiffness to arrow shafts?
Post by: COOCH on April 28, 2011, 09:06:00 PM
Not in my experience however multiple coats will add weight.Helmsman spar urathane is my favorite sealer for arrows.
Title: Re: Does urethane add spine/stiffness to arrow shafts?
Post by: Orion on April 28, 2011, 09:06:00 PM
No. It will not change the spine.
Title: Re: Does urethane add spine/stiffness to arrow shafts?
Post by: kenner on April 28, 2011, 11:13:00 PM
Good to know!  Weight is not a consideration, when I'm talkin' overall weight of 575 grains.  Not usin' sights,, so I'll adjust.

Thanks!,,, Ken
Title: Re: Does urethane add spine/stiffness to arrow shafts?
Post by: Stumpkiller on April 28, 2011, 11:29:00 PM
http://tradgang.com/noncgi/ultimatebb.php?ubb=get_topic;f=1;t=103488

http://tradgang.com/noncgi/ultimatebb.php?ubb=get_topic;f=6;t=006084

Apparantly urethane fumes do cause some memory loss.    :D
Title: Re: Does urethane add spine/stiffness to arrow shafts?
Post by: Bjorn on April 29, 2011, 12:38:00 AM
Charlie LOL!   :laughing:    :laughing:    :laughing:
Title: Re: Does urethane add spine/stiffness to arrow shafts?
Post by: Don Stokes on April 29, 2011, 08:58:00 AM
No. At one point, I even tried a double dip soaking with source chemicals to react and create the polyurethane inside the shaft, but it made no difference in spine.

For some reason I can't remember what chemicals I used...
Title: Re: Does urethane add spine/stiffness to arrow shafts?
Post by: SveinD on April 29, 2011, 06:28:00 PM
QuoteOriginally posted by Stumpkiller:
Apparantly urethane fumes do cause some memory loss.     :D  
Now that's a good comment if I ever saw one!  :)